COUNT_ITEM
Syntax
COUNT_ITEM( array, value )
Description
Returns the number of elements in the array array equal to value. The type of value must match the type of the array elements.
Argument types:
array—Array of fractional numbers | Array of integers | Array of stringsvalue—Fractional number | Integer | String
Return type: Integer
Examples
COUNT_ITEM(ARRAY(1, 2, 2, 3), 2) = 2
COUNT_ITEM(ARRAY(1, 2, 2, 3), 4) = 0
COUNT_ITEM(ARRAY(1, NULL, 2, NULL), NULL) = 2
Data source support
ClickHouse 21.8, PostgreSQL 9.3.
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